Ultrasonic Testing: Ultrasonic testing is a non-destructive method of detecting internal defects in metal components. It involves using a transmitter probe to transmit ultrasound to the component surface through a coupling agent. As the ultrasound propagates within the component, it encounters different reflection signals at various interfaces. By measuring the time difference between the different reflection signals transmitted to the probe, internal defects within the component can be detected.
2.射线检测: Widely used in industry. There is no essential difference from natural light. Both are electromagnetic waves, but X-ray photons have much higher energy than visible light. It can penetrate objects that visible light cannot, and during penetration, it interacts with matter in complex physical and chemical ways. It can ionize atoms, causing certain substances to emit fluorescence, and can also induce photochemical reactions in some substances.
3. Magnetic Particle Inspection: A method of observing defects using magnetic particles as the display medium. According to the type of magnetic particle medium used during the magnetization process, the testing methods are divided into wet and dry methods; and according to the time the magnetic particles are applied to the workpiece, the inspection methods are classified as continuous and residual magnetism methods. The magnetic particle testing machine employs this technique.
4. Penetration Testing: Utilizing the physical wetting ability and capillary action of liquids on solids, first apply a high-penetration liquid penetrant containing dye to the surface of the workpiece to be tested. Due to the wetting and capillary action of the liquid, the penetrant seeps into surface open defects. Then, remove any excess penetrant from the surface, followed by coating a strong adsorption developer. The penetrant in the defects will be adsorbed onto the workpiece surface, with defect traces displayed on the monitor.
5. Eddy Current Testing: This is a non-destructive testing method that utilizes the principle of electromagnetic induction to measure the variation of induced eddy currents within the workpiece, for evaluating certain properties of conductive materials and workpieces, or for detecting defects. In industrial production, eddy current testing is one of the main methods for controlling the quality of various metal materials, a small amount of graphite, carbon fiber composites, and other non-metallic conductive materials, playing a significant role in the field of non-destructive testing technology.